Patents by Inventor Guo-Zhen Wang

Guo-Zhen Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230301479
    Abstract: A robot cleaner comprises a first light source, an optical sensor, a processing circuit and a second light source. The first light source emits first light. The optical sensor senses first optical data generated according to the first light. The processing circuit computes a height or an overhang height of an obstacle based on the first optical data. The second light source emits second light. The optical sensor senses second optical data generated according to the second light. The processing circuit determines whether the obstacle exists in the predetermined region or not based on the second optical data.
    Type: Application
    Filed: May 16, 2023
    Publication date: September 28, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Guo-Zhen Wang, Ting-Yang Chang
  • Publication number: 20230302627
    Abstract: There is provided an electronic product that performs the obstacle avoidance, positioning and object recognition according to image frames captured by the same optical sensor. The electronic product includes an optical sensor, a light emitting diode, a laser diode and a processor. The processor identifies an obstacle and a distance thereof according to image frames captured by the optical sensor when the laser diode is emitting light. The processor further performs the positioning and object recognition according to image frames captured by the optical sensor when the light emitting diode is emitting light.
    Type: Application
    Filed: May 17, 2023
    Publication date: September 28, 2023
    Inventors: GUO-ZHEN WANG, HUI-HSUAN CHEN
  • Publication number: 20230296774
    Abstract: An image sensing system, comprising: a distance determining device, configured to determine whether a distance between an object and an electronic device comprising the image sensing system is larger than a distance threshold or not; and an image sensor, comprising at least one image sensing unit, wherein the image sensor senses images with a first frame rate when the distance is smaller than the distance threshold and senses the images with a second frame rate when the distance is larger than the distance threshold, wherein the first frame rate is different from the second frame rate.
    Type: Application
    Filed: May 24, 2023
    Publication date: September 21, 2023
    Applicant: PixArt Imaging Inc.
    Inventor: Guo-Zhen Wang
  • Publication number: 20230296770
    Abstract: An optical sensing system, comprising: a first light source for emitting first light to a first part of an object; a second light source for emitting second light to a second part of the object, wherein the first part is above the second part, wherein the first light is not emitted to the second part and the second light is not emitted to the first part; a uniform light source, for emitting uniform light to the object, wherein the first light source is below the uniform light source and the second light source is above the uniform light source; and an optical sensor, wherein a detecting region of the optical sensor comprises an adjustable upper half region and a lower half region. Such optical sensing system can reduce the effect that the arm causes for hand location calculating.
    Type: Application
    Filed: May 24, 2023
    Publication date: September 21, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Guo-Zhen Wang, Tse-En Peng
  • Patent number: 11756331
    Abstract: A portable electronic device is provided. The portable electronic device includes a body, an image sensor and a main system. The image sensor continually captures a first image outside the body, detects at least one motion of a user according to the first image, and generates a control signal related to the motion. The main system receives the control signal from the image sensor and executes a function or a service corresponding to the motion according to the control signal.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: September 12, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Guo-Zhen Wang, Han-Chang Lin
  • Patent number: 11752635
    Abstract: There is provided a mobile robot that controls an exposure time of an optical sensor during a time interval during which images of a gap between tiles are captured. At an end of the time interval that an image of a gap between tiles is captured, the exposure time of the optical sensor is adjust to the exposure time being used right before the time interval to avoid high brightness of the captured image while the image of a gap between tiles is suddenly disappeared from a field of view of the optical sensor.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: September 12, 2023
    Assignee: PIXART IMAGING INC.
    Inventor: Guo-Zhen Wang
  • Publication number: 20230282023
    Abstract: There is provided an electronic device capable of improving the difficulty of breaking a digital electronic lock and the accuracy of gesture control. The electronic device is unlocked according to gestures of a single hand or two hands, an operation hand, a gesture position, a staying time of gesture and a gesture variation of a user. The electronic device further improves the accuracy of gesture control in conjunction with an accessory pattern, temperature sensing and space information of a wearable device. The present disclosure further provides an electronic device that identifies legitimacy of moving the electronic device according to a variation sequence of 3-axis accelerations of an accelerometer.
    Type: Application
    Filed: May 11, 2023
    Publication date: September 7, 2023
    Inventors: NING SHYU, SHIH-FENG CHEN, HAN-LIN CHIANG, YEN-MIN CHANG, GUO-ZHEN WANG
  • Patent number: 11740684
    Abstract: A sensor device includes an image sensing array, a frame buffer, a first read line, a second read line and an energy accumulator. The image sensing array is configured to sense reflected light from a working surface and includes a plurality of sensing pixels and a plurality of self-powered pixels. The sensing pixels respectively output image data according to the sensed reflected light. The self-powered pixels respectively output photocurrent according to the sensed reflected light. The first read line is coupled between the sensing pixels and the frame buffer. The second read line is coupled between the self-powered pixels and the frame buffer. The energy accumulator stores electrical energy of the photocurrent via a charge path between the self-powered pixels and the energy accumulator.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: August 29, 2023
    Assignee: PIXART IMAGING INC.
    Inventor: Guo-Zhen Wang
  • Patent number: 11741708
    Abstract: An image recognition method and system based on deep learning are provided. The image recognition system includes a first recognizing engine, at least one second recognizing engine and a processing circuit. The second recognizing engine is activated to recognize a testing image when the first recognizing engine is recognizing the testing image. The processing circuit determines whether to interrupt the first recognizing engine recognizing the testing image according to a result outputted by the second recognizing engine after the second recognizing engine completes recognition of the testing image.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: August 29, 2023
    Assignee: PIXART IMAGING INC.
    Inventor: Guo-Zhen Wang
  • Publication number: 20230259139
    Abstract: There is provided a moving robot including a first light source module and a second light source module respectively project a first light section and a second light section, which are vertical light sections, in front of a moving direction, wherein the first light section and the second light section cross with each other at a predetermined distance in front of the moving robot so as to eliminate a detection dead zone between the first light source module and the second light source module in front of the moving robot to avoid collision with an object during operation.
    Type: Application
    Filed: April 28, 2023
    Publication date: August 17, 2023
    Inventors: SHIH-CHIN LIN, WEI-CHUNG WANG, GUO-ZHEN WANG
  • Patent number: 11715226
    Abstract: A liquid level detection system of detecting a target container includes a main body, an optical sensor, a fan and an operational processor. The main body has a supporting platform whereon the target container is disposed. The optical sensor is disposed above the supporting platform and adapted to output a detection image containing the target container. The fan is disposed on the main body and faces the supporting platform. The operational processor is electrically connected to the optical sensor, and adapted to analyze the detection image generated within an operation period of the fan and further to acquire an effective feature of the target container inside the detection image.
    Type: Grant
    Filed: July 7, 2021
    Date of Patent: August 1, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Guo-Zhen Wang, Tse-En Peng
  • Patent number: 11703595
    Abstract: An image noise compensating system, comprising: a distance determining device, configured to determine whether a distance is larger than a distance threshold or not; an image sensor, comprising at least one image sensing unit, wherein the image sensor forms a combined image sensing unit when the distance is smaller than the distance threshold and senses images without forming the combined image sensing unit when the distance is larger than the distance threshold, wherein a width of an area that the combined image sensing unit can sense is larger than a width of an area that the image sensing unit can sense; a noise compensating circuit, configured to compensate image noises; and a control circuit, configured to calculate a location of the image noise compensating system.
    Type: Grant
    Filed: April 19, 2022
    Date of Patent: July 18, 2023
    Assignee: PixArt Imaging Inc.
    Inventor: Guo-Zhen Wang
  • Patent number: 11703458
    Abstract: A detecting device for detecting liquid or colloid, comprising: a light emitting device, configured to emit first light, wherein a first angle between a first emitting direction of the first light and a surface when the detecting device is located on the surface, wherein the first angle is larger than 0° and smaller than 90°; an optical sensor, configured to detect first optical data generated based on the first light; and a processing circuit, configured to determine if the liquid or the colloid exists in a predetermined range of the detecting device based on the first optical data. An automatic cleaner applying the detecting device is also disclosed.
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: July 18, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Guo-Zhen Wang, Hung-Ching Lai
  • Patent number: 11698457
    Abstract: An object detecting system comprising: a first distance measuring device, configured to measure a first distance between a first part of an object and the first distance measuring device; a second distance measuring device, configured to measure a second distance between a second part of the object and the second distance measuring device; a uniform light source, configured to emit uniform light to the object; an optical sensor, configured to sense optical data of the object generated based on the uniform light; and a control circuit, configured to calculate a location of the object according to the first distance, the second distance and the optical data.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: July 11, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Guo-Zhen Wang, Tse-En Peng
  • Patent number: 11691264
    Abstract: There is provided a mobile robot that performs the obstacle avoidance, positioning and object recognition according to image frames captured by the same optical sensor. The mobile robot includes an optical sensor, a light emitting diode, a laser diode and a processor. The processor identifies an obstacle and a distance thereof according to image frames captured by the optical sensor when the laser diode is emitting light. The processor further performs the positioning and object recognition according to image frames captured by the optical sensor when the light emitting diode is emitting light.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: July 4, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Guo-Zhen Wang, Hui-Hsuan Chen
  • Patent number: 11690490
    Abstract: An auto clean machine comprising: a height computing device; and an obstacle determining device. The height computing device is turned on to compute a height or an overhang height of an obstacle when the obstacle determining device determines the obstacle exists in a predetermined region of the auto clean machine. The height computing device does not compute the height and the overhang height when the obstacle determining device does not determine the obstacle exists in the predetermined region.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: July 4, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Guo-Zhen Wang, Ting-Yang Chang
  • Publication number: 20230206743
    Abstract: There is provided a smoke detector including a light source, a reflective surface, a light sensor and a processor. The light sensor receives reflected light when the light source emits light toward the reflective surface, and generates a reference detection signal when there is no smoke. The processor receives the detection signal from the light sensor, and automatically selects a set of predetermined condition thresholds according to a profile of the detection signal to be compared with the detection signal thereby determining whether to generate an alarm according to the comparison result.
    Type: Application
    Filed: February 20, 2023
    Publication date: June 29, 2023
    Inventors: Cheng-Nan TSAI, Guo-Zhen WANG, Ching-Kun CHEN, Yen-Chang CHU, Chih-Ming SUN
  • Publication number: 20230209174
    Abstract: An electronic system including a display device, an image sensor, a face detection engine, an eye detection engine and an eye protection engine is provided. The image sensor captures an image. The face detection engine recognizes a user face in the image. The eye detection engine recognizes user eyes in the image. The eye protection engine turns off the display device when the user eyes are recognized in the image but the user face is not recognized in the image.
    Type: Application
    Filed: February 20, 2023
    Publication date: June 29, 2023
    Inventors: HAN-CHANG LIN, GUO-ZHEN WANG, NIEN-TSE CHEN
  • Publication number: 20230199320
    Abstract: There is provided an image processing device including a light sensor and a processor. The light sensor is used to detect light and output an image frame. The processor identifies intensity of ambient light according to an image parameter associated with the image frame. When the ambient light is identified to be strong enough, the processor performs an object identification directly using the image frame. When the ambient light is identified to be not enough, the processor firstly converts the image frame to a converted image using a machine learning model, and then performs the object identification using the converted image.
    Type: Application
    Filed: February 15, 2023
    Publication date: June 22, 2023
    Inventor: GUO-ZHEN WANG
  • Publication number: 20230196757
    Abstract: An electronic apparatus, comprising: an optical sensor, comprising a kind determining region and an element analyzing region, wherein the optical sensor acquires first optical data via the kind determining region, and acquires second optical data via the element analyzing region, wherein the kind determining region and the element analyzing region are different regions of the optical sensor; a kind determining component, configured to determine an object kind of the object according to the first optical data; and an element analyzing component, configured to analyze element of the object according to the second optical data.
    Type: Application
    Filed: January 16, 2023
    Publication date: June 22, 2023
    Applicant: PixArt Imaging Inc.
    Inventor: Guo-Zhen Wang